JP3143501U - Liquid ejector for cleaning the chimney - Google Patents

Abstract

Provided is a liquid ejecting apparatus for cleaning a chimney that can efficiently wash off ash on the inner wall of the chimney while following the conventional cleaning process, and can ensure the safety of workers and improve the working environment. To do.
A liquid ejecting apparatus for cleaning a chimney includes a straight tubular base tube connected to one end of a liquid supply hose, an elbow bent at 90 degrees connected to the other end of the base tube, The injection nozzle is attached to the tip opening of the elbow, and the attachment base is attached to the trunk portion of the base tube. In addition to this, the 90 ° bent elbow connected to the other end of the base tube, two 90 ° bent elbows connected to the opening of the elbow via a swivel joint, and the elbow tube attached to the tip opening. You may comprise from the injection nozzle. The diffusion range of the injection from the injection nozzle is set to a radial direction of 360 degrees with respect to the injection axis.
[Selection] Figure 2

Description

  The present invention relates to a liquid ejecting apparatus for cleaning an inner wall surface of a chimney cylinder.

  In so-called urban thermal power plants that supply power by thermal power generation in urban suburbs, the scattering of incinerated ash emitted from the chimney into the atmosphere has a great impact on the surrounding environment and can be neglected in the operation of the power plant It was not a thing. For this reason, it is essential to periodically remove the incineration ash adhering to the chimney that is the source of scattering.

  This removal operation is an operation in which washing water (mainly water) is sprayed completely into the chimney to wash it off. As shown in Fig. 4, the chimney structure for flue gas of thermal power plants adopts a structure that secures self-supporting strength by putting four chimney pipes close to each other, and the overall appearance is the upper end where four pipes are assembled. It has a so-called divergent shape that spreads from the part (“smoke collecting part”) toward the ground. First, a large amount of water is jetted from the top air discharge port to wash away the ash on the chimney inner wall of the smoke collector. Washed off. Next, move to a maintenance inspection window (commonly called “manhole”) opened to a size that allows a person to enter the side of the chimney cylinder, and spray the water from there to wash off the chimney inner wall. I was working. Sequentially, the above work was performed by moving to the next lower manhole, and this work was performed to the bottom to complete the work.

By the way, as a cleaning device that automatically performs such cleaning in the chimney, the cleaning devices in the chimney listed in Patent Documents 1 to 4 below are disclosed. The main structure of these disclosed devices is to clean the inner wall of the chimney by rotating the spray nozzle of the cleaning water and ejecting it in the radial direction, and this spray nozzle device is suspended by a support device disposed at the upper end opening of the chimney. It was a mechanism for moving down while washing and cleaning.
JP 09-248536 A JP2003-236482A JP 2004-053165 A JP 2004-174378 A

  However, in the conventional chimney cleaning work, workers with water injection nozzles connected to a water supply hose were washed off according to the above work process, but they faced the chimney with water injection nozzles It was something to embark on. The work in such a posture is very dangerous, and there is a problem that it is difficult to wash off the entire wall surface in the chimney without causing unevenness by spraying water evenly to infiltrate the dust.

  Furthermore, the inner wall surface facing the worker can be sufficiently washed off because the collision angle with the wall surface can be reduced, but the inner wall surface on the near side of the worker can be washed with water. The collision angle (0 degree was vertical to the wall surface) was increased, and the spray water did not work efficiently, resulting in uneven washing. Therefore, when trying to get out and try to reduce the collision angle as much as possible, the worker had to take an unreasonable posture, which was dangerous work. Since such operations have a long time from the stack part of the chimney having a height of 200 m toward the lower stage, there are many problems in work efficiency as well as improvement of the working environment.

  In order to solve this problem, there are automatic mechanized cleaning apparatuses disclosed in Patent Documents 1 to 4 described above. However, an apparatus having such a configuration can be applied to a chimney with a straight pipe upright and a relatively low height chimney (20 to 50 m), but it can reach a height of 200 m curved in a diverging shape. It was difficult to apply to the collective chimney of a large power plant.

  Therefore, the present invention has been made by paying attention to the above-mentioned problems. While following the conventional cleaning process, the ash on the inner wall of the chimney is efficiently washed away, and the safety of workers and labor are ensured. A novel liquid ejecting apparatus for cleaning a chimney aimed at improving the environment is provided.

In order to solve the above-described problems, a chimney cleaning liquid ejecting apparatus according to the present invention is configured as follows.
That is, a straight tubular base tube to which a liquid supply hose is connected at one end, an elbow that is connected to the other end of the base tube or bent at an angle of 90 degrees, and attached to the tip opening of the elbow And an attachment base attached to the trunk of the base tube.

  As another configuration, a straight tubular base tube having a liquid supply hose connected to one end, a 90 ° bent elbow connected to or integrally formed with the other end of the base tube, and an opening of the elbow A 90 degree bent elbow pipe connected to one or more via a swivel joint, an injection nozzle attached to the tip opening of the elbow pipe, and a mounting base attached to the base pipe It is characterized by.

  Further, the diffusion range of the injection from the injection nozzle is characterized by a radiation direction of 360 degrees with respect to the injection axis.

  The liquid ejecting apparatus for cleaning a chimney according to the present invention (hereinafter referred to as “this apparatus”) has the following effects by being configured as described above.

  According to the configuration of the first aspect, since the diffusion jet is performed in the radial direction of 360 degrees through the elbow in which the tip opening of the predetermined straight tubular base tube is bent at 90 degrees, the chimney cylinder body in particular. As described above, the nozzle can be disposed at the central portion of the cylindrical shape, and water can be uniformly infiltrated into the inner wall surface for cleaning. Further, according to the configurations of claims 2 and 3, the two elbow pipes are combined on the plane orthogonal to each other through the swivel joints to combine the respective rotational angular displacements on the virtual spherical surface centered on the nozzle position. The injection axis from the nozzle can be aligned with a point on substantially the entire surface.

  Next, the best mode for carrying out this apparatus will be described in detail with reference to the drawings. Although this apparatus relates to liquid ejection, water is used as an example of the liquid here.

  FIG. 1 is a perspective view showing a minimum configuration example (“this device 1”) of this apparatus, FIG. 2 is a perspective view showing a configuration example of this apparatus, and FIG. 3 is an exploded perspective view of this apparatus. is there.

  Reference numeral 1 denotes a base tube, which is a metal tube that is the basis of the apparatus 1. As shown in FIG. 1, a hose H (flexible pipe) for water supply from a water source (not shown) such as a water storage tank or pipe supply water is provided on the base side of the base pipe 1 (upstream side of the water supply flow). Body). An elbow 10 bent at 90 degrees is formed on the distal end side (downstream side of the water supply flow) of the base tube 1. Although the elbow 10 is formed separately in the present apparatus 1, it may be formed integrally with the base tube 1. A water injection nozzle 2 is attached to the open end of the elbow 10. The spray nozzle 2 may be configured so that the diffusion angle of the spray water can be adjusted as appropriate, or nozzles of various specifications with a fixed diffusion angle may be appropriately selected and attached.

  Further, the configuration example shown in FIGS. 2 and 3 (“present apparatus 2”) is an extension of the present apparatus 1. The present apparatus 2 connects a first elbow pipe 4 bent at 90 degrees between the elbow 10 and the injection nozzle 2 via a swivel joint 3, and further, a similar swivel joint 3 is connected to the first elbow pipe 4. The second elbow pipe 5 bent by 90 degrees is connected through the vias. By interposing this swivel joint 3, it is possible to rotate the shaft 360 degrees in a watertight state. The injection nozzle 2 is attached to the tip opening of the second elbow pipe 5. In addition, a handle 6 is attached to the vicinity of the connecting portion between the second elbow pipe 5 and the first elbow pipe 4 so as to be gripped by an operator and operate the direction of the injection nozzle 2. By operating the handle 6, the first and second elbow pipes 4 and 5 are each rotated 360 degrees.

Next, as shown in the figure, the base tube 1 is provided with a mounting base 7 for holding the apparatus. The mounting base 7 has a bowl-shaped pedestal 70 to be installed so as to straddle the air discharge port D and the peripheral edge E of the manhole M, and the base tube 1 side so as to stand on the base. And a pipe clamp 71 for holding and fixing the portion. The pedestal 70 is configured to be detachable, and is provided with a fastening mechanism that attaches a handle 72h to one side of the opposite brim 72 and moves the rod screw 72s forward and backward by this rotational operation. The configuration of the pipe clamp 71 in this apparatus is a general one, and is configured to be sandwiched and fastened between a cylindrical half-divided base plate 71b and an upper plate 71u [Usage example of this apparatus].

  Next, a usage example of this apparatus will be described. FIG. 4 is an overview of the chimney to be cleaned by this apparatus. This is a chimney for exhaust emission from a thermal power plant that reaches an actual height of 200 emails, and the construction structure with high self-supporting strength is put together at the top so that four of these chimneys lie close to each other. is doing. FIGS. 5 to 7 are plan views showing the mounting state of the device 1 or the device 2 to the chimney and the change in direction of the injection nozzle.

  First, this apparatus is attached to the peripheral edge E of the atmospheric discharge port D of the smoke collecting part S at the upper end of the chimney C via the attachment base 6 (see FIGS. 5 to 7). At this position, the apparatus 2 is used to perform cleaning by spraying water while sequentially changing the direction of the injection nozzle 2 so that the collision angle is reduced toward the cylindrical inner wall to be cleaned (movable nozzle cleaning). In this case, since the swivel joint 3 that rotates 360 degrees is attached to both ends of the first elbow pipe bent at 90 degrees, the first and second elbow pipes are appropriately rotated at different angles on the orthogonal planes. By doing so, the injection axis can be directed to any point on the virtual spherical surface centered on the injection nozzle 2.

  Separately from this, the base tube 1 of the apparatus 1 is extended to extend the injection nozzle 2 to the vicinity of the center of the atmospheric discharge port D, and the injection nozzle 2 is held upward (fixed nozzle cleaning) to perform showering. . This showering is performed with a diffusion angle α close to 90 degrees with respect to the injection axis A (or the injection central axis) from the injection nozzle 2 and a spread (so-called umbrella shape) with a radiation range angle of 360 degrees. Then, this fixed nozzle cleaning is continued for a while in order that the sprayed water travels along the inner wall surface W of the chimney cylinder and uniformly infiltrates all the wall surfaces to wash it off. In this case, the mounting tube 7 is used to hold the base tube 1 and the injection nozzle 2 is held near the central axis of the cylinder. Ladder-like bridges (not shown) may be installed so as to span between them, and the base tube 1 may be held by them.

  Next, in the shower ring, it is difficult to completely wash off all the inner wall surfaces W in the chimney. Therefore, the shower ring moves to the lower manhole M, and the inner wall W in the vicinity thereof is washed off. The work here is performed by selecting the devices 1 and 2 appropriately and entering the chimney cylinder from the manhole M, similarly to the use at the atmospheric discharge port D. The holding and fixing of the apparatus is performed by installing the base 70 of the mounting base 7 so as to straddle the peripheral edge E of the manhole M. In the water washing operation, as in the case of the movable nozzle washing described above, the operator manually operates the handle 6 to inject water toward the three-dimensional 360-degree range (the range of points on the virtual spherical surface). .

  Such work can be sequentially moved from the upper manhole M to the lower manhole M to wash off the soot and dust adhering to the entire inner wall surface W of the chimney cylinder.

It is a perspective view which shows the minimum structural example ("this apparatus 1") of this apparatus. It is a perspective view which shows the structural example ("this apparatus 2") of this apparatus. It is a disassembled perspective view of this apparatus. 1 is an overall overview of a chimney to be cleaned by this apparatus. It is the top view which showed the attachment state to the chimney of this apparatus 2, and direction change of the injection nozzle. It is the top view which showed the attachment state to the chimney of this apparatus 1, and direction change of the injection nozzle. It is the top view which showed the attachment state to the chimney of this apparatus 2, and direction change of the injection nozzle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base pipe 10 Elbow 2 Injection nozzle 3 Swivel joint 4 1st elbow pipe 5 2nd elbow pipe 6 Handle 7 Mounting base 70 Base 71 Pipe clamp 71b Base plate 71u Upper plate 72 Butt part 72h Handle 72s Rod screw H Hose C Chimney S Smoke collection Part D Air outlet M Manhole E Peripheral part W Inner wall

Claims (3)

A straight tubular base tube (1) having a liquid supply hose (H) connected to one end;
An elbow (10) bent at 90 degrees connected to or integrally formed with the other end of the base tube (1);
An injection nozzle (2) attached to the tip opening of the elbow (10);
An attachment base (7) attached to the base tube (1);
A liquid ejecting apparatus for cleaning a chimney, comprising: A straight tubular base tube (1) having a liquid supply hose (H) connected to one end;
A 90 ° bent elbow (10) connected to or integrally formed with the other end of the base tube (1);
90 degree bent elbow pipes (4, 5) in which one or more of the elbows (10) are connected to the tip opening of the elbow (10) via a swivel joint (3);
An injection nozzle (2) attached to the tip opening of the elbow pipe (4, 5);
An attachment base (7) attached to the base tube (1);
A liquid ejecting apparatus for cleaning a chimney, comprising:   3. The liquid ejecting apparatus for cleaning a chimney according to claim 1, wherein a diffusion range of the ejection from the ejection nozzle (2) is a radial direction of 360 degrees with respect to the ejection axis.

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